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  • Substrate noise coupling in ring oscillator-based phase locked loops

    Creator:
    Shreeve, Robert
    Abstract:
    In this thesis, the performance degradation of a phase-locked loop due to substrate noise is examined. A new analytical equivalent circuit model for substrate noise coupling is derived for a heavily doped silicon substrate. The model has been validated with measured data from a 0.35 μm CMOS process. Since the...
    Resource Type:
    Masters Thesis
    Full Text:
    Coupling in Ring Oscillator-Based Phase Locked Loops Abstract approved: Kartikeya Mayaram In this thesis

  • Algorithms and simulators for coupled device/circuit simulation

    Creator:
    Dudar, Taras
    Abstract:
    Algorithms and simulators comprised of SPICE3 as a circuit level simulator and two device simulators EOFLOW and PROPHET for accurate simulation of new types of devices are presented in this thesis. An integration of EOFLOW with SPICE3 creates a capability for efficient simulation of a system containing interconnected electroosmotic flow...
    Resource Type:
    Masters Thesis
    Full Text:
    Dr. Kartikeya Mayaram, my research advisor at OSU for having given me an opportunity to come to OSU

  • Algorithms and tools for optimization of integrated RF VCOs

    Creator:
    Kratyuk, Volodymyr
    Abstract:
    This thesis presents algorithms and tools for the automated design of RF LC CMOS voltage controlled oscillators (VCOs) with low phase noise given a set of specifications. The electromagnetic solver, ASITIC, combined with the circuit simulator, SpectreRF, allows optimization of the VCO circuit parameters and inductor layout. This approach gives...
    Resource Type:
    Masters Thesis
    Full Text:
    : Algorithms and Tools for Optimization of Integrated RF VCOs. Abstract approved: Kartikeya Mayaram This

  • Coupled circuit and device simulations for design of RF MEMS VCOs

    Creator:
    Behera, Manas
    Abstract:
    A new coupled circuit and electrostatic/mechanical simulator (COSMO) for the design of RF MEMS VCOs is presented in this thesis. The numerical solution of device level equations is used to accurately compute the capacitance of a MEMS capacitor. This coupled with a circuit simulator facilitates the simulation of circuits incorporating...
    Resource Type:
    Masters Thesis
    Full Text:
    of RF MEMS VCOs. Abstract approved: Kartikeya Mayaram A

  • Frequency domain steady-state simulation of oscillators

    Creator:
    Duan, Xiaochun
    Abstract:
    The focus of this work is on developing algorithms for frequency domain steady-state analysis of oscillators. Convergence problems associated with the frequency domain harmonic balance simulation of oscillators have been examined. Globally convergent homotopy methods have been combined with the harmonic balance method for robust high-Q oscillator simulation. Various homotopy...
    Resource Type:
    Dissertation
    Full Text:
    : Kartikeya Mayaram The focus of this work is on developing algorithms for frequency domain steady

  • Layout dependent and bias independent scalable substrate model for RF MOSFETs

    Creator:
    Suravarapu, Ravikanth
    Abstract:
    The dependence of the substrate resistance, R[subscript sub], for MOS transistor RF modeling on transistor biasing and layout is studied from device simulations and measurements. Though R[subscript sub] is found to be bias dependent, the error incurred by assuming a constant value equal to the DC resistance is not significant....
    Resource Type:
    Masters Thesis
    Full Text:
    : Kartikeya Mayaram The dependence of the substrate resistance, for MOS transistor RF modeling on transistor

  • Modeling and simulation methods for RF MEMS VCOs

    Creator:
    Sankaranarayanan, Janakiram Ganesh
    Abstract:
    This work focusses on the modeling and the development of efficient coupled simulation techniques for MEMS based RF oscillators. High-level models for MEMS based varactors have been discussed and their accuracy issues are identified, based on comparisons with numerical simulations. A faster simulation approach based on the time-domain shooting method...
    Resource Type:
    Masters Thesis
    Full Text:
    . Title: Modeling and Simulation Methods for RF MEMS VCOs Abstract approved: Kartikeya Mayaram This

  • Analysis and design of CMOS RF LNAs with ESD protection

    Creator:
    Chandrasekhar, Vinay
    Abstract:
    An analysis that accounts for the effect of standard electrostatic discharge (ESD) structures on critical LNA specifications of noise figure, input matching and gain is presented. It is shown that the ESD structures degrade LNA performance particularly for higher frequency applications. Two LNAs, one with ESD protection and one without,...
    Resource Type:
    Masters Thesis
    Full Text:
    : Analysis and Design of CMOS RF LNAs with ESD Protection Abstract approved: Kartikeya Mayaram An analysis

  • Steady-state analysis techniques for coupled device and circuit simulation

    Creator:
    Hu, Yutao
    Abstract:
    The focus of this work is on the steady-state analysis of RE circuits using a coupled device and circuit simulator. Efficient coupling algorithms for both the time-domain shooting method and the frequency-domain harmonic balance method have been developed. A modified Newton shooting method considerably improves the efficiency and reliability of...
    Resource Type:
    Dissertation
    Full Text:
    advisor Dr. Kartikeya Mayaram for his continuous support and guidance throughout my graduate studies. I

  • Accurate and efficient simulation of synchronous digital switching noise in system on a chip

    Creator:
    Habal, Husni
    Abstract:
    A new method is presented to compress switching information in large digital circuits. This is combined with an efficient approach of generating the noise signatures of cells in a digital library that results in an accurate and efficient approach for estimating the noise generated in digital circuits. This method provides...
    Resource Type:
    Masters Thesis
    Full Text:
    : Kartikeya Mayaram Tern A new method is presented to compress switching information in large digital